Joystick controller



FIG. 1 is a perspective view of the joystick controller showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a top plan view thereof.

The bottom of the joystick controller forms no part of the claimed design. The broken line showing of various features such as the input buttons and cable holes is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a joystick controller, as shown and described. 